Skip the auto shop - Our mechanics make house calls

Q: Car won't start after getting gas

asked by on

When getting gas and going to start my car it's not starting up. I have to put pressure on the brake for a few seconds and then my car will start right up. I have to sometimes hurry and put it in drive so it won't go down as well.

My car has 150000 miles.
My car has an automatic transmission.

A: Hello. If this is occurring right after you...

Hello. If this is occurring right after you get fuel then most of the time it is caused by a vent valve or purge valve that is sticking open. Most of the time it is a purge valve problem. This valve is part of the evaporative emissions system and needs to be closed most of the time, especially when fueling. If it is open it will allow fuel vapor and even at times raw fuel to enter the engine while fueling. This essentially causes a rich condition or floods the engine and that is why it takes time to start it back up. It can also be a failing fuel pump or coincidentally a failing crankshaft position sensor. These are all common, but I always check with the evap system parts first. If you need to have this hard starting problem figured out, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Car won't start but will still crank - 2001 BMW 325i

Hi - I would check to hear the fuel pump running when you go to start it. If not, check the fuse and relay for the fuel pump. If both of these are good, chances are (with your mileage) that...

Q: My car shut off while driving and it won't turn back over

Assuming the engine is getting fuel with the new fuel pump, the next step would be to check for spark. The engine needs spark, air, and fuel to start and run. Air is almost always present, and again assuming fuel...

Q: Why does a crackling , popping sound come from my vents when I turn on the account or heat .

When you command air conditioning or heat there are mode doors that direct the airflow to the requested place. Positions are floor, windshield, vent /floor, and defrost/floor. The doors move in a housing that has a tight fit. These doors...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.